Foldable or collapsible adjustable scaffold.



F. J. NAGEL.

FOLDABLB 0R GOLLAPSIBLE ADJUSTABLE SGAFFOLD.

APPLIOATION FILED MAY 29. 1914. RENEWED FEB. 20, 1915.

1,1 33 ,878. Patented Mar. 30, 1915.

2 SHEETS-SHEET l.

THE NORRIS PETERS C(l, FHOTD-LITHQ, WASHINGTON. n. c.

F. J. NAGEL.

FOLDABLE OB. GOLLAPSIBLE ADJUSTABLE SGAFFOLD.

APPLIOATION FILED MAYZQ, 1914. RENEWED FEB. 20, 1915.

1,133,878. Patented Mar. 30, 1915.

2 SHEETS-SHEET 2.

rHE NORRIS PETERS 60.. PHOTG-LITHQ. WASHINGTON, L7. 7v

rrEi) STATES Parana" ICE;

FOLDAIBLE OR COLLAPSIBLE ADJUSTABLE SCAFFOLCD.

Application filed May 29, 1914, Serial No. 841,818. Renewed February 20,1915.

To all whom it may concern:

Be it known that I, FnnDERioK J. NAGEL, a citizen of the United States,residing at Portville, in the county of Cattaraugus and State of NewYork, have invented a new and useful Foldable or Collapsible AdjustableScaffold; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to an improved scaflold easily adaptable'to anypitch of roof, whereby a chimney may be constructed.

An object of the invention is to provide a scaffold, which is not onlyadjustable, in order to fit or conform to various pitches of roofs, butalso collapsible in a small compass, whereby the same may be easilycarried or shipped.

Another object of the invention is to provide a scaffold constructed ofstock angle iron.

A further object of the invention is to provide a scaffold which issimple and efficient in construction and which may be made very cheaply.

In practical fields the details of construction may necessitatealterations, falling within the scope of What is claimed.

The invention comprises further features and combination of parts, ashereinafter set forth, shown in the drawings and claimed.

In the drawings :Figure 1 is a view in perspective of the improvedscaffold constructed in accordance with the invention. Fig. 2 is a sideelevation of the scaffold, showing the same adjusted and fitting a roofof a different pitch than that shown in Fig. 1. Fig. 3 is a view showingthe scaffold collapsed. Fig. 4 is a front elevation of the scaffold,showing the sides thereof adjusted closer together than that shown inFig. 1. Fig. 5 is a sectional view on line 55 of Fig. 1. Fig. 6 is asectional View on line 6-6 of Fig. 1. Fig. 7 is a sectional view on line7 7 of Fig. 1.

Referring more especially to the drawings, 1 and 2 designate twovertical uprights or bars or beams, angular in cross section. Theportions or faces 3 of which at their upper ends are provided withelongated slots 4. Connecting the lower ends of said bars or beams 1 and2 as at 5 pivotally are the bars 6 and 7, which are arranged tointersect one another as shown. The other Specification of LettersPatent.

Patented Mar. 30, 1915.

Serial No. 9,736.

end-of the bars 6 and 7 are provided with bolts 8, passing through theslots 4 of the bars 1 and 2 and having suitable nuts for adj ustablyconnecting the bars 6 and 7 to the bars 1 and 2. The side or face 10 ofeach bar 1 and 2 is provided with a pair of elongated slots 11 and 12,and pivotally connecting the lower end of the side or face 10 as shownat 13 is the lower end of the face or side 14 of an angular bar 15,which bar is designed to conform to the pitch of the roof. The face orside 14 of each bar 15 is provided with an elongated slot 16, andconnecting pivotally to the upper end of the bar 15 as shown at 17 is ashort angular bar 18, one face or side of which is constructed with anelongated slot 19. The pivots 13 and 17 comprise bolts having nuts 20,and regardless of the pitch of the roof, the bars 1 and 2 and the bars18 are always adjusted in vertical positions, and the nuts 20 firmlytightened, to hold the said bars 1 and 2 and 18 in their adjustedpositions.

Connecting the bars 18 and the upper ends of the bars 1 and 2 aretransverse bars 21, which are also angular in cross section. One end ofthe side or face 22 of each bar 21 is provided with an elongated slot23, to receive a bolt 24, which also passes through the slot 12 of theface 10 of each of the bars 1 and 2, there being a nut on the bolt 24 tohold said parts in their adjusted positions. The end portion 25 of eachbar 21 also has a bolt 26, passing through the slot 19 of the bar 18provided with a nut, to further hold the bar 21 in adjusted position andhorizontally. The usual form of scaffold boards 27 are designed to restupon the bars 21, and on which the mechanic may stand, in constructing achimney. Additional bars 28 angular in cross section are provided havingelongated slots 29, and passing through the slots 29 and through theslots 11 of the vertical bars or standards 1 and 2 are bolts 30 providedwith nuts 31 for holding the bars 28 adjusted in positions relative tothe bars 1 and 2. The end portions 32 of the bars 28 have bolts 33passing through the slots 16 of the bars 15, there being nuts 34 forholding said parts in their adjusted positions. Connected to the bolts17 are chains 35, having hooks 36 to engage the apex of the roof, forholding the scaffold in position, as shown in Fig. 1.

It will be observed that no matter what pitch the roof may be, the bars1 and 2 and 18 may be adjusted in vertical positions, and the bars 21and 28 arranged horizon tally, to hold the scaffold boards. However, itis not absolutely necessary that the bars 1 and 2 and 18 should assumeexact vertical positions, for it is possible that the bars 21 and 28 maybe arranged horizontally, regardless whether or not the bars 1 and 2 and.18 are in vertical positions. Furthermore, it will be seen uponreference to the drawings that the scaffold may be folded or collapsed lin a very small compass, to be easily carried or shipped.

The invention having been set forth, what is claimed as new and usefulis 1. A collapsible roof scaffold comprising a pair of framesconstructed of angular bars, each frame comprising a pitch bar, anupright long bar rising from and adjustably pivoted to thelower end ofthe pitch bar, a short upright bar rising from and adjustably pivoted tothe upper end of the pitch bar, a substantially horizontally arrangedbar adjustably connecting the pitch bar and the long upright bar, asecond substantially horizontally arranged bar adj ustably connectingthe short and long upright bars, a pair of links crossing one another,the lower end of each link being pivotally connected to thelower endportion of each long bar, the upper end of each link being pivotally andvertically adjustably connected to the upper portion of each long bar,

whereby said frames may be adjusted and collapsed relative to eachother, the arrangebar rising from the upper end of the pitch barincluding means whereby it may be adjusted pivotally, a substantiallyhorizontal bar connecting the long and short upright bars includingmeans whereby it may be adjusted vertically, a second substantiallyhorizontally arranged bar connecting the pitch bar and the vertical barincluding means whereby it may be adjusted vertically, a pair of linkscrossing one another, the lower end of each link being connected 'to thelower end portion of each long bar and including means whereby it may beadjusted pivotally, the upper end of each link being connected to theupper portion of the long vertical bars including means whereby saidupper end of each link may be adjusted vertically. r

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERICK J. NAGEL.

WVitnesses L. P. ANTRIM,

E. L. NAGEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

